On 04/08/2023 13:44, Tomi Valkeinen wrote:
> The driver debug prints DSI related timings as raw register values in
> hex. It is much more useful to see the "logical" value of the timing,
> not the register value.
I'm a bit confused by the term 'logical' value, I think you meant
decimal, easier to read by humans numbers.
> Change the prints to print the values separately, in case a single
> register contains multiple values, and use %u to have it in a more human
> consumable form.
But, yes, decimal is better for the dmesg, as I recall I had a tool
which was using hex numbers so it was better to have the prints also in hex.
Reviewed-by: Peter Ujfalusi <[email protected]>
>
> Signed-off-by: Tomi Valkeinen <[email protected]>
> ---
> drivers/gpu/drm/bridge/tc358768.c | 21 ++++++++++++---------
> 1 file changed, 12 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/bridge/tc358768.c
> b/drivers/gpu/drm/bridge/tc358768.c
> index 9b633038af33..0ef51d04bb21 100644
> --- a/drivers/gpu/drm/bridge/tc358768.c
> +++ b/drivers/gpu/drm/bridge/tc358768.c
> @@ -739,57 +739,59 @@ static void tc358768_bridge_pre_enable(struct
> drm_bridge *bridge)
>
> /* LP11 > 100us for D-PHY Rx Init */
> val = tc358768_ns_to_cnt(100 * 1000, dsibclk_nsk) - 1;
> - dev_dbg(priv->dev, "LINEINITCNT: 0x%x\n", val);
> + dev_dbg(priv->dev, "LINEINITCNT: %u\n", val);
> tc358768_write(priv, TC358768_LINEINITCNT, val);
>
> /* LPTimeCnt > 50ns */
> val = tc358768_ns_to_cnt(50, dsibclk_nsk) - 1;
> lptxcnt = val;
> - dev_dbg(priv->dev, "LPTXTIMECNT: 0x%x\n", val);
> + dev_dbg(priv->dev, "LPTXTIMECNT: %u\n", val);
> tc358768_write(priv, TC358768_LPTXTIMECNT, val);
>
> /* 38ns < TCLK_PREPARE < 95ns */
> val = tc358768_ns_to_cnt(65, dsibclk_nsk) - 1;
> + dev_dbg(priv->dev, "TCLK_PREPARECNT %u\n", val);
> /* TCLK_PREPARE + TCLK_ZERO > 300ns */
> val2 = tc358768_ns_to_cnt(300 - tc358768_to_ns(2 * ui_nsk),
> dsibclk_nsk) - 2;
> + dev_dbg(priv->dev, "TCLK_ZEROCNT %u\n", val2);
> val |= val2 << 8;
> - dev_dbg(priv->dev, "TCLK_HEADERCNT: 0x%x\n", val);
> tc358768_write(priv, TC358768_TCLK_HEADERCNT, val);
>
> /* TCLK_TRAIL > 60ns AND TEOT <= 105 ns + 12*UI */
> raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(2 * ui_nsk),
> dsibclk_nsk) - 5;
> val = clamp(raw_val, 0, 127);
> - dev_dbg(priv->dev, "TCLK_TRAILCNT: 0x%x\n", val);
> + dev_dbg(priv->dev, "TCLK_TRAILCNT: %u\n", val);
> tc358768_write(priv, TC358768_TCLK_TRAILCNT, val);
>
> /* 40ns + 4*UI < THS_PREPARE < 85ns + 6*UI */
> val = 50 + tc358768_to_ns(4 * ui_nsk);
> val = tc358768_ns_to_cnt(val, dsibclk_nsk) - 1;
> + dev_dbg(priv->dev, "THS_PREPARECNT %u\n", val);
> /* THS_PREPARE + THS_ZERO > 145ns + 10*UI */
> raw_val = tc358768_ns_to_cnt(145 - tc358768_to_ns(3 * ui_nsk),
> dsibclk_nsk) - 10;
> val2 = clamp(raw_val, 0, 127);
> + dev_dbg(priv->dev, "THS_ZEROCNT %u\n", val2);
> val |= val2 << 8;
> - dev_dbg(priv->dev, "THS_HEADERCNT: 0x%x\n", val);
> tc358768_write(priv, TC358768_THS_HEADERCNT, val);
>
> /* TWAKEUP > 1ms in lptxcnt steps */
> val = tc358768_ns_to_cnt(1020000, dsibclk_nsk);
> val = val / (lptxcnt + 1) - 1;
> - dev_dbg(priv->dev, "TWAKEUP: 0x%x\n", val);
> + dev_dbg(priv->dev, "TWAKEUP: %u\n", val);
> tc358768_write(priv, TC358768_TWAKEUP, val);
>
> /* TCLK_POSTCNT > 60ns + 52*UI */
> val = tc358768_ns_to_cnt(60 + tc358768_to_ns(52 * ui_nsk),
> dsibclk_nsk) - 3;
> - dev_dbg(priv->dev, "TCLK_POSTCNT: 0x%x\n", val);
> + dev_dbg(priv->dev, "TCLK_POSTCNT: %u\n", val);
> tc358768_write(priv, TC358768_TCLK_POSTCNT, val);
>
> /* max(60ns + 4*UI, 8*UI) < THS_TRAILCNT < 105ns + 12*UI */
> raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(18 * ui_nsk),
> dsibclk_nsk) - 4;
> val = clamp(raw_val, 0, 15);
> - dev_dbg(priv->dev, "THS_TRAILCNT: 0x%x\n", val);
> + dev_dbg(priv->dev, "THS_TRAILCNT: %u\n", val);
> tc358768_write(priv, TC358768_THS_TRAILCNT, val);
>
> val = BIT(0);
> @@ -803,10 +805,11 @@ static void tc358768_bridge_pre_enable(struct
> drm_bridge *bridge)
> /* TXTAGOCNT[26:16] RXTASURECNT[10:0] */
> val = tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk * 4);
> val = tc358768_ns_to_cnt(val, dsibclk_nsk) / 4 - 1;
> + dev_dbg(priv->dev, "TXTAGOCNT: %u\n", val);
> val2 = tc358768_ns_to_cnt(tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk),
> dsibclk_nsk) - 2;
> + dev_dbg(priv->dev, "RXTASURECNT: %u\n", val2);
> val = val << 16 | val2;
> - dev_dbg(priv->dev, "BTACNTRL1: 0x%x\n", val);
> tc358768_write(priv, TC358768_BTACNTRL1, val);
>
> /* START[0] */
>
--
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